package com.example.tliaswebmanagement.mapper;

import com.example.tliaswebmanagement.pojo.Emp;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.time.LocalDate;
import java.util.List;

@Mapper
public interface EmpMapper {

    /**
     * 查询总记录数
     *
     * @return
     */
/*    @Select("select count(*) from emp")
    public Long count();*/


    /**
     * 分页查询获取数据
     */
/*    @Select("select * from emp limit #{start}, #{pageSize}")
    public List<Emp> list(Integer start,Integer pageSize);*/

//    @Select("select * from emp")
    public List<Emp> list(String name, Short gender, LocalDate begin, LocalDate end);

    //批量删除
    void delete(List<Integer> ids);

    /**
     * 新增员工
     *
     * @param emp
     */
    //新增员工
    @Insert("insert into emp(username, name, gender, image, job, entrydate, dept_id, create_time, update_time)  " +
            "values (#{username}, #{name}, #{gender}, #{image}, #{job}, #{entrydate}, #{deptId}, #{createTime}, #{updateTime});")
    void insert(Emp emp);

    /**
     * 根据id查询员工
     *
     * @param id
     */
    @Select("select id, username, password, name, gender, image, job, entrydate, dept_id, create_time, update_time " +
            "from emp " +
            "where id = #{id}")
    Emp findById(Integer id);

    void update(Emp emp);

    /**
     * 根据用户名和密码查询员工
     *
     * @param emp
     */
    @Select("select *from emp where username = #{username} and password = #{password}")
    Emp getByUsernameAndPassword(Emp emp);

    /**
     * 根据部门id删除部门下所有员工
     * @param deptId
     * @return
     */
    @Delete("delete from emp where dept_id=#{deptId}")
    public int deleteByDeptId(Integer deptId);

}